Flooring jack



Nov. 29, 1949 T. TREASTER Filed May 22, 1946 Nov. 29, 1949 TREASTER 2,489,990

FLOORING JACK Filed May 22, 1946 2 Sheets-Sheet 2 g aadm Patented Nov. 29, 1949 *fUNlTE-D STATES Nr OFFICE FLOORING JACK Thomas Trea ster, San Francisco, Calif. Application May 22, 1946, Serial No. 671,512

an improved flooring jack used in laying floors,-

the same being adapted to be clamped to a floo'r; joist and having a pusher head engageable with. an edge of a floor board being laid together with a rack and pinion means for forcing the. head forwardly to push the floor board tightly in place; and means for locking the rack and pinion and said head in projected position.

A still further object of the invention is toprovide an improved flooring jack which will "be highly emcient in use, and relatively inexpensive to manufacture and produce.

Other objects will appear as the description proceeds.

In the accompanying drawings which form a part of this application,

Figure 1 is a perspective view of the improved flooring jack showing the same in position while laying a floor;

Figure 2 is a vertical sectional view taken on the line 2--2 of Figure 1;

Figure 3 is a top plan view of the floor jack the same being shown partially in section to illustrate the jack operating means;

Figure 4 is a bottom plan view of the floor jack, partially in section to show the means for securing the rack bar to the head piece;

Figure 5 is a sectional view taken on the line 5-5 of Figure 2;

Figure 6 is a sectional view taken on the line 86 of Figure 3;

Figure 7 is a sectional view taken on the line |--'I of Figure 3;

2 Claims. (01. 254-12) floors and comprising a head member generally denoted by the reference numeral l formed with an elongated floor board edge engaging block 2,,

and a cold rolled steel plate 3 secured by the screw fasteners 4 to said block adapted to overlie the floor board 5 being laid and to contact the upper surface thereof.

A pair of parallel spaced toothed racks 6 and I are provided with the threaded terminal fastening studs 8 and 9 adapted to be received in the internally threaded sockets l9 and II formed in the adjacent edge of the block 2, to be movable as a unit with said block. A connecting plate 59 is disposed between said racks 5 and l,

'- and is secured to the bottoms thereof by the screws 55.

- The tail member of the floor jack is generally designated by the reference numeral l2, and includes an elongated block I 3 to which the cold rolled steel plate I4 is secured by means of the screw fasteners l5; The plate I4 is formed at one end with. the integrally formed depending flange l6 having spurs I! attached to its base, and adapted to be embedded in the side of a floor stud or joist l8 when the jack is in position as shown in Figure 1 of the drawings.

An eccentric clamp having a cam head I9 is pivotally supported upon the pivot pin 29 extending through the plate l4, and is provided with the operating handle 2|, said cam clamp being positioned immediately below said plate Hi.

In the event the jack is to be used in laying floors over a sub-floor 22, where the floor joists l8 Figure 8 is a detailed sectional view taken on 45 the line 88 of Figure 3, and

Figure 9 is a perspective view of a modified tail piece having attaching spurs for engagement with a sub-floor.

Like characters of reference are used through- 50 out the following specification and the accompanying drawing to designate corresponding parts.

In carrying out the invention there is provided an improved form of floor jack used in laying 66 are not exposed, the plate 23 shown in Figure 9 of the drawings will be used, and is provided with the sub-floor engaging spurs 24, and is not provided with any form of end flange construction.

A stationary block 25 is adapted to extend between the two toothed racks 6 and l and to be secured by the threaded member 26 to the block l3, and is formed at its forward end with the arcuate pinion supporting head 2! in which locking teeth 28 are formed.

A pair of offset depending spaced pinion sections 29 and 30 are pivotally mounted on the pivot pin 3| extending through the stationary head 21, and are also connected together by the pin 32 upon which the locking pawl or dog 49 is ivotally mounted for engagement and cooperation with the locking piece 28 formed on the said head 21. The upper ends of the pinion sections 29 and 39 are secured together to form the socket 33, in which the detachable jack operating handle 34 is adapted to be received.

From the foregoing description it is believed 3 that the mode of operation will be apparent. When flooring is to be laid directly on floor joists, the eccentric clamp will be secured to a floor joist and the head of the jack brought into engagement with the edge of the floor board being laid, after which the handle 34 is moved to cause the pinion sections 29 and 30 to move the racks 6 and l and the interconnected head forwardly to force the floor board tightly against the previously laid fboar'd. iNails will fthengbeadriven into the board while the jack'is holding "itin place.

The pawl or dog 32 serving to hold the jack in adjusted position while the securing nails are being driven home.

When a floor is to be laid over a sub-floor, the tail piece with spurs shown inFigure' ilof the and a pawl pivotally mounted between said pinion sections for engaging the locking teeth of said head.

2. A floor laying jack comprising a floor board engaging block, a bearing plate carried by said block for engaging the top surface of a floor board, a pair of spaced parallel rack bars carried by and movable with said floor board engaging block, avconnecting plate underlying and secured to said rack bars, an anchor member including a base plate having a depending flange at one end,

: saiholding block carried by said base plate, a sta- "tionary block carried by said holding block and ijdispose'd between said rack bars, said stationary drawings will be used by driving .the rspursm-into b the sub-flooring to locate and hold the jack.

While the preferred embodiment of theinven tion has been illustrated-sand described it will be understood thatrit 3is.inot intended'dxo flimit'ithe'f' scope ;of the invention'thereton'as .manyrminor changes in detailcsofvconstrnctiont may bemesorted' to without departure sfnom ethesspirit 50f the invention.

Having :thus described any uinvention :what 11' claim as new and desire to FseQure-JbyJLetterS Patent of'the UsSiis:

1. :Axfloorlayingijackccomprising a floor board engaging memberma pair :ofspaced" paral-lelzrack bars carried lay-:said floorsboard'engaging member, ':a connecting plate underlying sand :secured to the rack bars, :anmnchorL:membe1',.-3neans.carried by said anchor-memberforwengaging a floor joist, means-for: actuating said floor 'ioistiengaging means into engagement with a fioor' joist,1a'

stationary supportmember carriedsbytthe -anchor member and disposed between the rack bars,:said support .t member "resting 'upon :said "connecting plate, sa head carried :by said support :member having locking teeth,:-.a pair of .pinion isections pivoted on said: head: =fori engaging :saidracldbars,

block resting upon said connecting plate, a head ri sing'from said stationary block having locking 1 rteethgarpair :of:pinion sections pivotally carried by said head and engaging said rack bars, a pivot 'pin'carried by said pinion sections, a pawl pivotally mounted on said pin engaging the locking teth=--'o"f said' heaid, spurs carried by the-flange'ot 'said base plate forxengaging a'floor joist, and

means carried by-saidplate for forcing said spurs intoaa fioorjoist.

THOMAS 'I REAS'I'ER.

REFERENCES .CITED ZThe followingreferences are of record in the file of this patent: 

